The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 2000
Filed:
Nov. 26, 1996
Nicholas V Perricone, Guilford, CT (US);
Chim Potini, Dekatur, IL (US);
Other;
Abstract
Fatty acid esters of ascorbic acid, particularly saturated fatty acid esters such as ascorbyl palmitate, their salts, ascorbic acid and its salts are solubilized in large amounts, e.g., up to about 25% by weight, and stabilized using special solvent systems. Useful solvents include polyethylene glycol, ethoxydiglycol, propylene glycol, butylene glycol, propylene carbonate, glycerin, a capric glyceride, a caprylic glyceride, an alkyl lactate, an alkyl adipate, an isosorbide, and mixtures thereof. Preferred dermatological compositions made using these solvents with ascorbic acid and/or at least one of its derivatives also include dimethylaminoethanol, tyrosine, proline, cystine, a penetration enhancer such as oleic acid, urea or mixtures thereof, and at least one natural and/or chemical antioxidant. Natural antioxidants that contain at least about 50% polyphenols and 50% catachins such as grape seed or green tea extracts are employed in some embodiments.